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    SubjectRe: XFS or Kernel Problem / Bug
    Hi!

    Sorry that is not possible - cause it is a production machine.

    But i've catched the error and the files from another machine - perhaps
    this helps.

    "BUG: unable to handle kernel NULL pointer dereference at virtual
    address 00000288"
    " printing eip:"
    "c0142ff7"
    "*pde = 00000000"
    "Oops: 0000 [#1]"
    "SMP "
    "Modules linked in: iptable_filter ip_tables x_tables"
    "CPU: 0"
    "EIP: 0060:[<c0142ff7>] Not tainted VLI"
    "EFLAGS: 00010246 (2.6.18.6 #1) "
    "EIP is at generic_file_buffered_write+0x390/0x6cf"
    "eax: 00000000 ebx: 000001ec ecx: ea029a40 edx: 00008002"
    "esi: 00000000 edi: e3b28c9c ebp: 000001ec esp: dd04bd18"
    "ds: 007b es: 007b ss: 0068"
    "Process proftpd (pid: 3615, ti=dd04a000 task=eba88a70 task.ti=dd04a000)"
    "Stack: e3b28d44 00000001 00000010 000001fc c036d793 000001fc c14765c0
    00000010 "
    " 080d404c 000001ec e3b28c9c c03e78c0 e3b28d44 ea029a40 000001fc
    00000000 "
    " 00000000 000001ec dd04beac 00d420b1 00000000 00000000 dd04bd80
    45b1fa67 "
    "Call Trace:"
    " [<c036d793>] sock_def_readable+0x7f/0x81"
    " [<c017a03a>] file_update_time+0xad/0xcb"
    " [<c0232015>] xfs_iunlock+0x55/0x9f"
    " [<c0262eeb>] xfs_write+0xa74/0xc61"
    " [<c036a253>] sock_aio_read+0x95/0x99"
    " [<c025d9fb>] xfs_file_aio_write+0x8f/0xa0"
    " [<c015fb94>] do_sync_write+0xc9/0x10f"
    " [<c0133ad6>] autoremove_wake_function+0x0/0x57"
    " [<c015f3d5>] generic_file_llseek+0x95/0xbc"
    " [<c015facb>] do_sync_write+0x0/0x10f"
    " [<c015fc80>] vfs_write+0xa6/0x179"
    " [<c015fe24>] sys_write+0x51/0x80"
    " [<c0102d3f>] syscall_call+0x7/0xb"
    "Code: 04 89 10 8b 44 24 40 85 c0 0f 85 db 00 00 00 8b 5c 24 24 85 db 0f
    88 c3 00 00 00 8b 4c 24 34 8b 51 18 f6 c6 10 75 73 8b 7c 24 28 <8b> 85
    9c 00 00 00 f6 40 30 10 75 63 f6 87 48 01 00 00 01 75 5a "
    "EIP: [<c0142ff7>] generic_file_buffered_write+0x390/0x6cf SS:ESP
    0068:dd04bd18"

    Files:
    http://server113-han.de-nserver.de/filemap.s
    http://server113-han.de-nserver.de/filemap.o

    Stefan

    Chuck Ebbert schrieb:
    > Stefan Priebe - FH wrote:
    >> It could be, that the options are now different - cause i my first try
    >> was to change the kernel options - if that did not help i switched
    >> back to 2.6.16.37.
    >>
    >> Any idea what i can do?
    >>
    >> Chuck Ebbert schrieb:
    >>> That doesn't match your oops at all. Did you use a different compiler
    >>> and/or
    >>> different kernel build options?
    >>>
    >>>
    > If you don't know what changed you can try different options until the
    > filemap.s
    > is the same. You should see
    >
    > movl 156(%ebp),%eax
    > testb 16, 48(%eax)
    >
    >
    > in generic_file_buffered_write. And you need to regenerate filemap.s
    > manually
    > each time.
    >
    >
    > (Did you test the kernel that you posted these pieces from? If you can
    > get it to oops
    > the same way, just post that instead.)
    >

    -
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